536 AUSTRALIAN STRONGYLIIN^, &C., 



13. Elytra seriate-punctate, intervals flat, seriate punctures elongate 



and smaller than ill 12 ohlongus 'Ba.tes; affinis Geh. 



14. Prothorax black, elytra blue cyajieij^eimis Chsimp. 



15. Prothorax black, elytra dark bronze *suhmetallicus Geh. 



Omolipus bimetallicus, n.sp. 

 Oval, convex (longitudinally and transversely), head and pro- 

 notum brilliant metallic-violet, the base and apex of the former 

 suffused with blue; elytra, legs, and underside a rich deep blue, 

 very nitid; antennae and tarsi reddish-brown, apical 4 joints of 

 the former opaque. 



Bead densely and finely punctate, epistoma rounded in front, 

 depressed below the level of the convex forehead, and clearly 

 separated from it by an arcuate suture; antennae not extending 

 to base of prothorax, joints 3 and 4 slightly elongated (3 longer 

 than 4), the remaining joints bead-like and successively wider, 

 8-10 transverse, 11 longer and wider than 10. 

 Prothorax (of (^) 3 x 4 mm., very convex, apex 

 slightly advanced in the middle, base truncate, 

 anterior sides depressed, angle obsolete, pos- 

 terior angles widely obtuse, sides very widely 

 rounded without any sinuation, basal margin 

 raised, lateral margin not evident from above, 

 disc very closely and finely punctate without 



, . ■ ,,. depression or medial line. Scutelluni very ^uvs^W 



bimetalliciLS. ^ '' 



and transverse. Elytra ovate, convex, of same 



width as prothorax at i)ase, and about twice as long, gradually 

 enlarging behind base to beyond halfway, with a steep apical 

 declivity; seriate-punctate, the suture showing an obscure stria- 

 tion, punctures in series round, regular, smaller than in 0. 

 ohlo7igiis Bates, larger than in 0. angustus {infra), not very 

 closely placed, intervals flat and apparently quite impunctate 

 (under a Zeiss binocular, minute sparse punctures can be seen); 

 underside closely, minutely punctate, submentura transversely 

 rugose, prosternal intercoxal process produced downwards. 

 Dimensions : (J, 9 x 4| mm.; 9, 6 x 3 mm. 



Hah. — Oempelli, East Alligator River, North Australia. 

 * Species unknown to me. 



